Material: POM/Delrin Polycarbonate Roller 625zz, wear-Resistant/Silent/Burr-Free High pressure POM circle made with German tech, stronger than molding pulley. Besides, every bearing is well oiled and tested during installation, work excellent in movement. Note:Please be aware there's a movable copper ring between bearings. It's normal if the ring moves, otherwise bearing can't rorate. It's not quality issue. Package Included: 10 pcs of 3D Printer WheelsProduct Descriction
Outer Diameter: 24mm,
Inner. diameter: 5mm,
Height: 10.95mm
Net Weight: 14g/pcs
Color: Black
Application: Suitable for all DIY 3D printers like Creality, Anycubic, Anet series 3D printer.